用抑制剂DG11降低安徽某硫化铜精矿氟镁含量

安徽某硫化铜矿选矿厂铜精矿铜品位为18.20%，F、MgO含量分别为0.25%和9.26%，不仅铜品位偏低，且F、MgO含量不满足冶炼厂对铜精矿F含量小于0.1%、MgO含量小于5%的要求。研究查明，含F、MgO易泥化、易浮滑石、蛇纹石和绿泥石等以微细粒大量混杂进入铜精矿是造成现场铜精矿F、MgO含量超标的主要原因。以广东省资源综合利用研究所研发的DG11为含氟镁脉石矿物的抑制剂，采用1粗1精1扫、中矿顺序返回浮选流程处理现场铜精矿，最终获得了铜品位为25.11%、铜回收率为97.45%，F和MgO含量分别为0.082%和2.02%的铜精矿，既显著提高了精矿铜品位，又大幅度降低了精矿氟、镁含量，达到冶炼厂对铜精矿F和MgO含量的要求。

Reducing the Content of Fluorine and Magnesium in a Copper Sulfide Concentrate in Anhui Province Using the Inhibitor DG11

The copper concentrate products of a sulfide copper ore dressing plant in Anhui province containing 18.20%Cu,0.25% F,9.26% MgO.Not only the copper grade is low,but also the content of fluorine and magnesium exceeds the standard of the smelting plant requires (content of F<0.1%,content of MgO<5%).Studies have shown that easy mudding and easy floating talc,serpentine and chlorite exist in the form of fine particles,these minerals containing F,MgO and in large mixed into the copper concentrate,which is the main cause of fluoride,magnesium content in on-site copper concentrate ex-ceeds the standard.Using DG1 1 developed by Guangdong Institute of Resources Comprehensive Utilization as inhibitor of the gangue minerals which contain fluorine and magnesium.Through the process of one roughing-one cleaning-one scavenging,and middling returning in proper order into the flow,the results show that the copper concentrate have 25.1 1%grade and 97.45%recovery rate,including 0.082% F,2.02%MgO.It not only improves the grade of copper concentrate,but also greatly reduces the content of fluorine and magnesium in the concentrate,and reached the requirements of copper smelting plant.